-- @testpoint: opengauss关键字Level(非保留)，作为函数名,部分测试点合理报错

--关键字不带引号-成功
drop function if exists Level;
create function Level(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带双引号-成功
drop function if exists "Level";
create function "Level"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带单引号-合理报错
drop function if exists 'Level';
create function 'Level'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `Level`;
create function `Level`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--清理环境
drop function if exists level(integer);
drop function if exists "Level"(integer);